boost/vmd/is_type.hpp

0001
0002 //  (C) Copyright Edward Diener 2011-2015
0003 //  Use, modification and distribution are subject to the Boost Software License,
0004 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
0005 //  http://www.boost.org/LICENSE_1_0.txt).
0006
0007 #if !defined(BOOST_VMD_IS_TYPE_HPP)
0008 #define BOOST_VMD_IS_TYPE_HPP
0009
0010 #include <boost/vmd/detail/setup.hpp>
0011
0012 #if BOOST_PP_VARIADICS
0013
0014 #include <boost/vmd/detail/is_type.hpp>
0015
0016 /*
0017
0018   The succeeding comments in this file are in doxygen format.
0019
0020 */
0021
0022 /** \file
0023 */
0024
0025 /** \def BOOST_VMD_IS_TYPE(sequence)
0026
0027     \brief Tests whether a sequence is a VMD type.
0028
0029     sequence = a possible VMD type
0030
0031     returns = 1 if the sequence is a VMD type,
0032               0 if it is not.
0033
0034     If the sequence is not a VMD data type this macro could lead to
0035     a preprocessor error. This is because the macro
0036     uses preprocessor concatenation to determine if the sequence
0037     is an identifier once it is determined that the sequence does not
0038     start with parentheses. If the data being concatenated would
0039     lead to an invalid preprocessor token the compiler can issue
0040     a preprocessor error.
0041
0042 */
0043
0044 #define BOOST_VMD_IS_TYPE(sequence) \
0045     BOOST_VMD_DETAIL_IS_TYPE(sequence) \
0046 /**/
0047
0048 /** \def BOOST_VMD_IS_TYPE_D(d,sequence)
0049
0050     \brief Tests whether a sequence is a VMD type. Re-entrant version.
0051
0052     d        = The next available BOOST_PP_WHILE iteration. <br/>
0053     sequence = a possible VMD type
0054
0055     returns = 1 if the sequence is a VMD type,
0056               0 if it is not.
0057
0058     If the sequence is not a VMD data type this macro could lead to
0059     a preprocessor error. This is because the macro
0060     uses preprocessor concatenation to determine if the sequence
0061     is an identifier once it is determined that the sequence does not
0062     start with parentheses. If the data being concatenated would
0063     lead to an invalid preprocessor token the compiler can issue
0064     a preprocessor error.
0065
0066 */
0067
0068 #define BOOST_VMD_IS_TYPE_D(d,sequence) \
0069     BOOST_VMD_DETAIL_IS_TYPE_D(d,sequence) \
0070 /**/
0071
0072 #endif /* BOOST_PP_VARIADICS */
0073 #endif /* BOOST_VMD_IS_TYPE_HPP */